Power-controlled matiple access schemes for next-generation wireless packet networks

Abstract

We introduce a novel formulation of the power control problem in wireless networking, which is especially appropriate for packet-based wireless communication, capturing the fundamental packet delay vs. transmission power tradeoff. Model analysis under simple, yet natural, assumptions yields ubiquitous structural properties of optimal power control schemes, which are then leveraged in the design of a new family of distributed algorithms for power-controlled multiple access (PCMA). Their experimental evaluation by simulation demonstrates performance gains over standard approaches. This is a first step toward designing efficient PCMA protocols for shared channel access in wireless packet networks.

A Necessary and Sufficient Condition for Optimal Transmission Power in Wireless Packet Networks with ARQ Capability

“…which was used as an approximated error probability in [3,12]. We set β = 0.2 to make the curve comparable with the other type in the FER range of practical interest.…”

“…2 We omit the proof as it is trivial. 3 Refer to [11] for the detailed proofs of all the propositions in this paper.…”

“…Recently, energy efficiency has emerged as one of the major research issues in wireless networks [1][2][3]. As most wireless devices such as lap-top computers, cellular phones and wireless sensor nodes operate with limited battery power, it is very important to find ways of maximizing the device lifetime by efficiently utilizing the limited energy.…”

“…The above features of wireless data services have triggered extensive researches for exploiting energy efficient operations of wireless packet data networks [3,5,[7][8][9]: Bambos and Kandukuri [3] proposed a new power control scheme that can minimize a cost function composed of buffer size and transmission power but it did not support the packet-wise delay constraint and rendered only semi-analytical solution. Song et.…”

A new admission control scheme under energy and QoS constraints for wireless networks

“…The tradeoff between carried traffic and QoS among multi-class traffic is pursued by using different methods such as neural networks and pricing models. The admission control schemes for code division multiple access (CDMA) systems, are mostly focused on the interference [2,27], because the increased number of ongoing services in a CDMA system can bring signal-to-interference ratio (SIR) to an unacceptable level. Thus, power control is emphasized in many research efforts, which are mainly concerned with the improvement of system performance such as capacity and throughput [1,2,26].…”